Wearing very Quickly

Just bought this and after a week of solid use sport climbing there is already significant wear. I use a Mammut Smart belay device and that seems to hold the rope in one spot so perhaps that is part of the wear issue but there is already a groove and with the I-beam construction it has created a sharp/rough edge. My last belay biner was a DMM and it lasted for well over 2 years before developing a significant groove